Replace IOSurfaceManager by directly passing IOSurface Mach ports over Chrome IPC.

content/common/mac/io_surface_manager_messages.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_MESSAGES_H_
-#define CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_MESSAGES_H_
-
-#include <mach/message.h>
-
-#include "content/common/mac/io_surface_manager_token.h"
-
-// Mach messages used for child processes.
-
-// Message IDs.
-// Note: we currently use __LINE__ to give unique IDs to messages.
-// They're unique since all messages are defined in this file.
-#define MACH_MESSAGE_ID() __LINE__
-
-namespace content {
-
-// Messages sent from the child process to the browser.
-
-struct IOSurfaceManagerHostMsg_RegisterIOSurface {
-  enum { ID = MACH_MESSAGE_ID() };
-  mach_msg_header_t header;
-  mach_msg_body_t body;
-  mach_msg_port_descriptor_t io_surface_port;
-  IOSurfaceManagerToken::Name token_name;
-  int io_surface_id;
-  int client_id;
-};
-
-struct IOSurfaceManagerHostMsg_UnregisterIOSurface {
-  enum { ID = MACH_MESSAGE_ID() };
-  mach_msg_header_t header;
-  mach_msg_body_t body;
-  IOSurfaceManagerToken::Name token_name;
-  int io_surface_id;
-  int client_id;
-};
-
-struct IOSurfaceManagerHostMsg_AcquireIOSurface {
-  enum { ID = MACH_MESSAGE_ID() };
-  mach_msg_header_t header;
-  mach_msg_body_t body;
-  IOSurfaceManagerToken::Name token_name;
-  int io_surface_id;
-};
-
-// Messages sent from the browser to the child process.
-
-struct IOSurfaceManagerMsg_RegisterIOSurfaceReply {
-  mach_msg_header_t header;
-  mach_msg_body_t body;
-  boolean_t result;
-};
-
-struct IOSurfaceManagerMsg_AcquireIOSurfaceReply {
-  mach_msg_header_t header;
-  mach_msg_body_t body;
-  mach_msg_port_descriptor_t io_surface_port;
-  boolean_t result;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_MESSAGES_H_